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6. magnetic flux (Wb) is the area at right angles to flux
7. which is used at a point?
- E=Qk/r squared
- F=Qqk/r squared
8. if a current flows ACROSS a magnetic field...
- nothing changes
- the two fields produce a force
- the two fields are cancelled out
9. electromagnetic induction...
- inducing an e.m.f using a magnetic field and a changing flux linkage
- inducing an e.m.f using an electric field
10. flux linkage is the magnetic flux and the turns of coils
11. faradays law
- magnitude of the induced e.m.f is equal to the rate of change of flux linkage
- magnitide of the induced e.m.f is proportional to the number of coils
12. lenzs law is the direction of an induced current is opposite to the flux change across it